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CALIFORNIA LABORATORY SERVICES <br /> 03/08/04 12 43 , <br /> ENSR-Sacramento Project Former Unocal 2859, 1665 CLefW rkeOraertgnCNC0011 <br /> 10411 Old Placerville Rd,Suite 210 Project Number 06940-357-100 COC# 1,2,3 <br /> Sacramento,CA 95827-2508 Project Manager Ben 1 Hentngburg <br /> GasBTEX by GC PID/FID - Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes ' <br /> Batch CN01723 - EPA 5030 Water GC <br /> Blank(CN01723-BLK1) Prepared&Analyzed 03/02/04 , <br /> Gasoline ND 50 pg/L <br /> Benzene ND 050 " <br /> Toluene ND 050 ' <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 1 0 " <br /> Surrogate o-Chlorololuene(Gas) 219 200 110 65-135 ' <br /> LCS(CN01723-BSI) Prepared&Analyzed 03/02/04 <br /> Gasoline 489 50 pg/L 500 978 65-135 <br /> Surrogate o-Chlorotoluene(Gas) 21 7 200 108 65-135 <br /> LCS Dup(CN01723-BSD1) Prepared&Analyzed 03/02/04 <br /> Gusuhne 473 50 }µg1L 500 94 6 65-135 3 33 30 <br /> Sul rogale o-Chlorololuene(Gas) 216 11200 108 65-135 <br /> Matrix Spike(CN01723-MSl) Source C-NC-0022-09=Prepared&=Analyzed 03/02/04 <br /> Gasoline 512 50 pg/L S00 54 916 65-135 <br /> Surrogate o-Chlorololuene(G&sJ� 21 2 " 200 106 65-135 -'- <br /> -Matrix Spike Dup(CN01723-MSD1)- - —Source-CNC0022-09 Prepared&Analyzed 03/02/04 - - - - -r -- - T <br /> Gasoline 518 50 pg/L 500 54 92 8 65-135 1 17 30 <br /> Surrogate o-Chlorotoluene(Gas) 213 200 106 65-135 <br /> t <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www californtalab com 916-638-7301 Fax' 916-638-4510 ' <br />